I do not understand why people are getting so mad about the questions being answered. It does not lessen the humor. The fact that people do not want to know the answers proves that far too many are content with being morons. Who am I to want to have a shred of intelligence? The rest of you may continue to wallow in stupidity.

weren't you reading the other comments dont be an ass!!! the questions are retorical and not meant to be answered if you really want people to know the answer tell random people and they'll tell you the same damn thing, "i don't care"

3. There is no speed of darkness. It is merely the absence of light.
4. This is an incredibly stupid question. Black boxes (which are painted orange for the most part) survive crashes because they're built incredibly densely. If a plane was built in the same way it wouldn't be able to move. And it wouldn't help the passengers either. Even if the plane stayed intact (and somehow managed to be in the air in the first place) in a crash, you'd get identical g-forces and so the passengers would still go splat.
12. Birds don't fall out of trees when they sleep because of the way their leg muscles are structured. When they relax (to go to sleep) their feet grip tighter. They have to make an effort to let go.
19. You can't travel at the speed of light. Ever.

19. It has not been proven that you cannot travel the speed of light. and only in theroy are you unable to "accelerate" to the speed of light. it may be possible to traverse distance as fast if not faster than light. look up the story of real life "warp drive" at popular science. i found it slightly interesting, and it has some validity to it too.

Number 3 is easily answered. The speed of darkness is basically the speed of light, as the light is turned off. Picture light as a blanket that covers the room, starting from the light-bulb and growing at a extremely high speed to cover the whole room. Now imagine a vacuum suck up the blanket from the same place as the light-bulb. If you still don't get it, keep these in mind.
Light is an actual thing, that's why black holes can suck it into their center.
Darkness is the lack of light, not a particle or wave (depending on what you think light is).

Answers to most of the questions
1. Microsoft, IKEA, Toyota, GM motors, etc
2. They put one plate with the old product and one with the new in front of a testpanel of dogs and check which one is usually preferred
3. Darkness is still, but it will get dark at the speed of light because that's how long it takes the light to disappear
4. Because that material costs a lot of money and it's properties aren't what you'd want to build a plane out of
5. Nobody, you can't copyright official characters like the copyright, pound, dollar, etc
6. Of course you can, but the effect would be minimal
7. Because dogs can work themselves to death (almost). Try catching a stick for a dog long enough, or go hunting
8. Because mechanical calculators had that setup to make it easier to do mathematic functions and print it out in a readable way, and they just continued the tradition with the electronic ones. One the key-mapped phone they tried to copy the rotary phone setup, where 1 is at the top and 9 at the bottom
9. If they're on land long enough, yes, but only in the same way you get thirsty for air after spending too much time in outer space without an oxygen tank
10. You can get cornered by several people as long as you have a wall behind you
11. OK is a way to write okay, which is a term of approval that is just above mediocre
12. Why don't you roll over on your back/stomach during the night if you fell asleep on your side?
13. The color orange
14. You could call it ladybird like everyone else does, or Coccinellidae which is the real name
15. Yes, you will remember, and you can recover from amnesia as long as it isn't repressed memories
16. Yes, and I take it you've tried
17. Yes, that is wierd
18. No, the wind-resistance would create so much noise that you wouldn't be able to hear it. If you traveled at the speed of sound in a vehicle you'd be able to hear it because the sound would also be traveling at the speed of sound in the vehicle, plus it's own speed.
19. First, your headlight would turn on, and assuming they're so increadibly awesome that they wouldn't burn up at that speed you'd get no extra light in front of you. Imagine rolling a ball and walking beside it at the same speed
20. Maybe because the picture on a TV is a set of 3 colors interlaced, red, green and blue. That's my theory
21. If they did the amount they owned would be pretty darned thin at the center of the earth, because the mass would be a cone, getting smaller and smaller the closer you get to the center. As #3 pointed out, different countries, different rules
22. As mentioned, there are roads without speed limits in the world, and having a car with max speed 70/80mph probably means you're short on horsepower or torque

Why is everyone trying to answer the questions??? It's so stupid. And as for number 12: I know alot of people who do turn onto their back/stomach even though they fell asleep on their sides, including myself.

"everyone" is NOT trying to answer the questions, only few persons are doing it.
and actually what MOST people are doing is suggesting some other questions.
oh! and a few neurotics complaining about the few who try to answer the questions and calling them "everyone"

12] birds have a tendon that run from their body to thier claws. it runs over their knees. when they fall asleep on a branch, their bodyweight pushes the bird's legs into the crouched position. the tendon is stretched and this pulls the claws into the gripping position [like one of those rods with a pincer at one end that you use to pick up litter]. in fact, the bird cannot let go until it 'stands up'. so birds can stay attached to a branch even when dead.

If a man with a multiple personality disorder is about to commit suicide, is it considered a hostage situation?
OK was used in the 70's which meant "all cool" but was spelled wrong because it was a cool thing to do then...and still is...

Well I am going to have to disagree since OKAY is the actual word--- even if most spell checks now say that is wrong and it should be ok (this annoys me to no end seeing as people are now raised on their spell checks and are therefore learning the improper spelling and grammar for the term)